Show current time (UTC & Local) continuously updated

[jamessynge]

The sensor data is regularly updated, but the time only shows up sometimes, and then doesn't update

[wtgee]

Somewhat related to #9. Each component (weather, sensors, mount) is sending its own status messages. The mount status isn't updated as part of the alignment procedure. Should be fixed.

[wtgee]

Just a clarification, the time is updated when a POCS instance is running. This is mostly because it has the Observer that knows local time. Could have something separate that does it.